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2. Definite clause grammar - Wikipedia

   en.wikipedia.org/wiki/Definite_clause_grammar

   A definite clause grammar (DCG) is a way of expressing grammar, either for natural or formal languages, in a logic programming language such as Prolog. It is closely related to the concept of attribute grammars / affix grammars. DCGs are usually associated with Prolog, but similar languages such as Mercury also include DCGs.

3. Sentence diagram - Wikipedia

   en.wikipedia.org/wiki/Sentence_diagram

   Dependency, in contrast, is a one-to-one relation; every word in the sentence corresponds to exactly one node in the tree diagram. Both parse trees employ the convention where the category acronyms (e.g. N, NP, V, VP) are used as the labels on the nodes in the tree.

4. Syntax (programming languages) - Wikipedia

   en.wikipedia.org/wiki/Syntax_(programming_languages)

   The phrase grammar of most programming languages can be specified using a Type-2 grammar, i.e., they are context-free grammars, [8] though the overall syntax is context-sensitive (due to variable declarations and nested scopes), hence Type-1. However, there are exceptions, and for some languages the phrase grammar is Type-0 (Turing-complete).

5. Parse tree - Wikipedia

   en.wikipedia.org/wiki/Parse_tree

   A simple parse tree. A parse tree is made up of nodes and branches. [4] In the picture the parse tree is the entire structure, starting from S and ending in each of the leaf nodes (John, ball, the, hit). In a parse tree, each node is either a root node, a branch node, or a leaf node. In the above example, S is a root node, NP and VP are branch ...

6. Grammatical Framework (programming language) - Wikipedia

   en.wikipedia.org/wiki/Grammatical_Framework...

   GF is capable of parsing and generating texts in several languages simultaneously while working from a language-independent representation of meaning. Grammars written in GF can be compiled into a platform independent format and then used from different programming languages including C and Java , C# , Python and Haskell .

7. CYK algorithm - Wikipedia

   en.wikipedia.org/wiki/CYK_algorithm

   The end result is then a shared-forest of possible parse trees, where common trees parts are factored between the various parses. This shared forest can conveniently be read as an ambiguous grammar generating only the sentence parsed, but with the same ambiguity as the original grammar, and the same parse trees up to a very simple renaming of ...

8. Non-English-based programming languages - Wikipedia

   en.wikipedia.org/wiki/Non-English-based...

   Kalaam is the programming language in Hindi and has all the basic functionalities of a modern programming language from for loops to while loops and from functions to conditional statements. Kalaam has its own parser, interpreter, Virtual memory stack and executes source code from parse tree generated by the parser. Bhailang

9. Abstract syntax tree - Wikipedia

   en.wikipedia.org/wiki/Abstract_syntax_tree

   An abstract syntax tree (AST) is a data structure used in computer science to represent the structure of a program or code snippet. It is a tree representation of the abstract syntactic structure of text (often source code) written in a formal language. Each node of the tree denotes a construct occurring in the text.